oauth tutorial - OAuth Obtaining an Access Token - oauth2 tutorial - oauth authentication




What is an Access Token in OAuth 2.0?

  • An access token is a string which identifies the user, an application, and the page.
  • The access token includes the information when the token will expire and which app is created that token.
  • It is necessary to acquire OAuth 2.0 client credentials from the API console.
  • The access token is requested from the authorization server done by the client.
  • It gets an access token from the response and then sends the token to the API that we wish to access.
  • Access tokens are the applications that use to make API requests done on the user.
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  • The access token represents the authorization of a specific application to access specific parts of the user data.
  • Access tokens must be kept confidential in transit and should be given in storage.
  • The access token can only be used over an https connection, when passing it over a non-encrypted channel which would make it trivial for third parties to intercept.
  • The access token is where the apps make a request to get an access token from the user.
  • The Access Token, which is commonly referred to as access_token in code samples, is a credential that can be used by a client to access an API.
  • The access_token should be used as a Bearer credential and is transmitted in an HTTP Authorization header to the API.
  • The diagram which is given below tell us the access token
 process of obtaining an access token in oauth

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Example of access token dummy request :

https://publicapi.example.com/oauth2/authorize?client_id=your_client_id&
redirect_uri=your_url&response_type=code
click below button to copy the code. By - oauth tutorial - oauth2 tutorial - team
  • These are some of the parameters and their descriptions which are given below.
    • client_id − It should be given to the client id of the application.
    • redirect_uri − It should be set to the URL. After the request is authorized, the user will be redirected back.
    • response_type − It can be a code or a token. The code must be used for server side applications and the token must be used for client side applications.
  • The table which is given below lists the concepts of Client Credentials.
S.No. Concept & Description
1 Authorization Code

The authorization code allows accessing the authorization request and grants access to the client application to fetch the owner resources.

2 Resource Owner Password Credentials

The resource owner password credentials include only one request and one response, and is useful where the resource owner has a good relationship with the client.

3 Assertion

Assertion is a package of information that makes the sharing of identity and security information across various security domains possible.

4 Refresh Token

The refresh tokens are used to acquire a new access tokens, which carries the information necessary to get a new access token.

5 Access Token Response

Access token is a type of token that is assigned by the authorization server.

6 Access Token Error Response Codes

If the token access request, which is issued by the authorization server is invalid or unauthorized, then the authorization server returns an error response.

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